Function scan_by_key 

pub fn scan_by_key<K, V>(
    key: &Array<K>,
    input: &Array<V>,
    dim: i32,
    op: BinaryOp,
    inclusive: bool,
) -> Array<V::AggregateOutType>
where
    V: HasAfEnum,
    V::AggregateOutType: HasAfEnum,
    K: HasAfEnum + Scanable,

Generalized scan by key

Parameters

• key is the key Array
• input is the data on which scan is to be performed
• dim is the dimension along which scan operation is to be performed
• op takes value of BinaryOp enum indicating the type of scan operation
• inclusive says if inclusive/exclusive scan is to be performed

Return Values

Output Array of scanned input